Banca de QUALIFICAÇÃO: JUSSIER DE OLIVEIRA VITORIANO

Uma banca de QUALIFICAÇÃO de DOUTORADO foi cadastrada pelo programa.
STUDENT : JUSSIER DE OLIVEIRA VITORIANO
DATE: 05/07/2021
TIME: 14:00
LOCAL: A CONFIRMAR
TITLE:

MODIFICATION, CHARACTERIZATION OF TITANIUM CP SURFACE TREATED BY H2 - N2-O2 PLASMA AND EVALUATION OF THE BIOACTIVITY OF THE TREATED SURFACE

KEY WORDS:

Thermochemical treatment; titanium oxynitrides; biomedical application; wettability; osseointegration

PAGES: 92
BIG AREA: Engenharias
AREA: Engenharia de Materiais e Metalúrgica
SUBÁREA: Metalurgia de Transformação
SPECIALTY: Recobrimentos
SUMMARY:

In recent years, there has been an increase in the search for techniques that allow the modification of surfaces without affecting the volumetric (bulk) physical properties of materials. Plasma-assisted surface modification is a surface modification technique that stands out from other surface modification techniques and processes due to its versatility, low impact on the environment and being economically viable, similar to conventional techniques in some respects, but with faster and non-polluting processes. Currently, titanium oxynitride obtained by plasma techniques stands out for presenting excellent mechanical, chemical, biomedical, optical and electronic properties. The search for devices which, in addition to mechanical resistance, offer an adequate relationship between bioactivity/biocompatibility when in contact with biological tissues emphasizes research on oxynitrides in the area of biomaterials. Thus, samples will be subjected to plasma treatment for surface modification, six study conditions were established for the work, where thermochemical treatments will be carried out in plasma atmospheres containing mixtures of H2 – N2 – O2. X-ray diffraction (XRD) and energy dispersive spectroscopy (EDS) will be used for chemical composition analysis. The surface morphology will be evaluated by scanning electron microscopy (SEM) and atomic force microscopy (AFM). While the surface energy and contact angle will be obtained by the sessile drop method. To evaluate the bioactivity of the films, the samples will be immersed in simulated body solution, SBF (Simulated Body Fluid) and characterized).

BANKING MEMBERS:
Presidente - 096.211.994-68 - CLODOMIRO ALVES JUNIOR - UFRN
Interna - 1481705 - SALETE MARTINS ALVES
Externo à Instituição - CARLOS EDUARDO BEZERRA DE MOURA - UFERSA
Externo à Instituição - RODRIGO SAVIO PESSOA - ITA